Applying an ideological litmus test for commencement speakers is not a good idea. Though in fairness, I don’t know what a litmus test is. A chemistry professor once tried to tell me, but I hated him too much to listen to what he had to say.
What’s the use in listening to someone you agree with? Not a rhetorical question. I’m actually asking that, so that I can answer it for you. So it’s more of a metorical question. And here we go: In the days ahead, there will be times you’ll be tempted to change your mind. There will be times you should change your mind. And the reason you will have changed your mind isnot because you set your mind to changing your mind. It will be because you encountered a thought from some other mind that changes your mind. Even from someone you think is out of her mind.